FISHES 



115 



on the Pacific slope. The perch spawns in the spring, laying its eggs 

 in a single mass which stretches out ribbon-like, sometimes 7 feet or more. 



2. Stizostedion Rafinesque. Body elongate; fusiform; head long; 

 premaxillaries protractile; top of head scaly; mouth large; jaws equal; 

 tail forked; ventral fins well separated ; lateral line continuous; branchio- 

 stegals 7; pseudobranchiae well developed: 2 species, both important 

 food and game fishes. 



S. vitrcum (Mitchill). Wall-eye pike; pike-perch (Fig. 55). Length 

 up to 900 mm.; weight up to 25 lbs.; head 3.6; depth 4.5; color dark 

 olive green, blotched with darker; belly pinkish; anterior dorsal fin with 



Fig. ^^.—Stizostedion vitretim (from Jordan &" Evermann). 



a large black spot on its hinder part; rays of dorsal fins XII to X\T- 

 21; anal II. 12 to 14; scales lo-iio to 132-25; pyloric caeca 3, of nearly 

 equal length; sides of head almost naked: Vermont and Pennsylvania 

 to Saskatchewan; southward to Georgia; northward to Hudson Bay; 

 very common northward. 



S. glauciim Hubbs. Similar to above, but smaller; color grayish 

 blue; length 450 mm.: Lake Erie. 



3. Cynoperca Gill and Jordan. Like Stizostedion; pyloric caeca 

 4 to 8, of unequal length: i species. 



C. canadensis (Smith). Sanger; sand pike. Length 450 mm.; head 

 3.5; depth 4.5 to 6; color olive gray; sides brassy or orange, with dark 

 mottlings; spinous dorsal fin with 3 irregular rows of black spots; rays of 

 dorsal fins XI to XV-I, 18; anal II, 11 or 12; scales 9-100 to 125-27; 

 pyloric cieca 4 to 8, of unequal length; sides of head scaly: Great Lakes 

 and St. Lawrence regions; westward to Montana; southward to Tennes- 

 see and Arkansas. 



Subspecies of C. canadensis 



C. c. grisea (DeKay). Head less completely scaled; head bones 

 and opercles smoother: Great Lakes and southward. 



